Local Windows desktop app for column mapping and sync between spreadsheets. No cloud, no login, no upload of your data — ever.
Per-column rules · Save as JSON profile · Re-run next month
You have a source spreadsheet (your data) and a target schema (the format another system needs). easyDataSync turns the chain of helper sheets and copy-paste into a saved mapping you click once.
Convert export from system A to import format of system B. Push only the deltas, not the whole table.
Supplier sends Excel, your ERP needs a specific schema. Drop the file, the watcher does the rest.
New-hire spreadsheet → HRIS bulk-import format. Validation rules catch missing fields before upload.
Three steps, ~30 seconds the first time. Subsequent runs: one click.
Drop in your data file (.xlsx, .xlsm, .csv, .tsv) and the target schema file you want to import into.
Direct copy from a source column · constant value · conditional flag · skip. Add per-column validations.
Save the mapping as a reusable JSON profile. Generate the import file with only changed and new rows.
Not Power Query. Not Airflow. Not a SaaS. A small, sharp tool for the data-import work that doesn't justify any of those.
Direct copy, constant value, conditional flag, or skip — chosen per target column.
Output contains only changed and new rows. Source files are never modified.
Save mappings as JSON. Reuse next month, share with a colleague, version-control them.
Mandatory · allowed values · regex · numeric range. Catch bad data before the destination.
Drop a file in a folder. Auto-process, validate, archive. CI/CD-friendly exit codes.
English (default) and German, switchable at runtime — Settings → Language.
Free for personal use. Pay once or per year for commercial use. 14-day money-back guarantee.
Personal use, single mapping
Power users, freelancers
Companies, teams
5+ seats, SLA
Prices include all applicable taxes. Payment processed by Lemon Squeezy (Merchant of Record). Refunds within 14 days, no questions asked.
easyDataSync runs 100 % locally on Windows. Network calls only for license activation, license re-validation (every 30 days), and update checks against GitHub Releases.
Your spreadsheets stay on your disk.
No usage tracking, no analytics, no third-party scripts.
Source files are never modified. Output is a separate import file.
The Software is proprietary. Binaries are distributed via the public GitHub repository, but the source is not published. The Free tier is free for personal use; commercial use requires a paid license.
First launch starts an automatic 30-day Pro trial. All Pro features unlocked. After expiry, the app reverts to Free tier — no nag screens, no forced uninstall.
The Free tier is for personal, non-commercial use only. Any use in a business context — including freelancers, contractors, employees on company time — requires a Business license.
Pro (perpetual): the version you bought keeps working forever. You only stop receiving updates after 1 year. Business / Enterprise (annual): at end of period, Pro features lock; the Free tier remains. Renew to keep Pro features.
14-day money-back guarantee, no questions asked. Email info@lupzn.de with your order ID.
Not yet. Windows-only for now. macOS is on the roadmap if there's enough demand. Cast your vote by emailing info@lupzn.de.
The binaries are not yet code-signed (certificates start at ~200 €/year). Right-click the .exe → Properties → "Unblock" → OK. Or in PowerShell: Unblock-File path\to\easyDataSync.exe. SHA256 hashes published with every release.
No account needed. Download the installer, run it, open Info → "License" to see your trial state. Activate a key any time later.
